The Application Of The Improved Fuzzy Mathematical Theory In The Road Line Selection

Since the founding of new China,especially the reform and opening,the economic development has been in a dynamic process,our country is in the primary stage of socialism,and the road construction is the foundation of the rapid development of economy.As the construction of the road requires a lot of material,human and financial resources,and because of the different options and there will be a large degree of difference,the process of selecting the line is to coordinate the various factors of the process.Therefore,the process of line selection is a process of coordination of various factors affected.But it is hard to have comprehensive consideration of various factors if choose the traditional way of line selection.Besides,the analysis of various factors have strong individual subjectivity,which makes the road route choice have a large crisis that has persistence,unpredictability and the characteristics.Therefore,crisis concept introduced in the process of road line selection,is cited in the article,as a kind of line selection of evaluation indexes.Combine the engineering practice into the evaluation system and analyze various crisis impact factors.The goals studied in the article includ the impact factors,the influence on reducing the subjectivity and the reducing of crisis.The main content of this article has the followings:(1)According to understand the line selection background,collect,sort,and analyze the development of the route line selection as well as the reach findings about line selection method at home and abroad,and in terms of the shortage of the existing method,determine the basic starting point.This paper analyzes and summarizes the influencing factors,the routine practice and the process of selection of route plan selection,and expounds and analyzes the final evaluation criteria of the route.(2)In this paper,through the disadvantages of the unsatisfactory system and incomplete evaluation system existing in the traditional route selection method,the fuzzy mathematical analysis method is used to select the road optimization model,and the fuzzy mathematical analysis method is used to quantify the unquantifiable in the traditional route selection evaluation method.Impact factors make the evaluation system more robust.(3)Based on the crisis concept of line selection,this paper divides the line selection impact factors into “quantifiable crisis factors” and “non-quantifiable crisis factors”.The fuzzy mathematics analysis can quantify the quantifiable crisis factors and solve the weights,but there is a certain degree of subjectivity;the BP neurons have reverse conduction and can automatically adjust the weights,but if the impact factors are large,it is easy to make The network is complex and poorly adaptable.Therefore,this paper proposes a combination of BP neural network method and fuzzy mathematics analysis method to obtain an improved fuzzy mathematics analysis model,and carries out crisis identification and analysis of crisis factors of line selection.(4)In this paper,the improved fuzzy mathematics analysis will be used in the form of the program.Taking Laiqu Expressway as an example,demonstrate that the improved fuzzy mathematics analysis method will have certain feasibility in the process of road line selection.